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--- computing:windows:mssql_backup [2012/01/20 22:05]
gcooper
+++ computing:windows:mssql_backup [2022/02/10 07:42] (current)
gcooper
@@ Line 1: / Line 1: @@
 ====== Microsoft SQL Server Backup ======
-===== Database Recovery Models =====
+**SQL Backup Background**: https://wiki.ahsay.com/doku.php?id=public:microsoft_sql_database
+**Download SQL Server Management Studio**: https://msdn.microsoft.com/library/mt238290.aspx
+<note tip>In general, it is **simpler and easier to restore a complete backup** (single file) than a differential or log backup (multiple file).  If your backup window and storage permit, you might choose to implement full, complete, single file backups every night.</note>
+===== Database Restore =====
+**[[https://blog.sqlauthority.com/2010/03/21/sql-server-fix-error-3117-the-log-or-differential-backup-cannot-be-restored-because-no-files-are-ready-to-rollforward |Log vs. Differential Restores]]**
+<note important>Many MSSQL backup systems (like Ahsay) **will only restore the files required for you to perform the actual database recovery**.</note>
+<note tip>It is convenient to use the **Microsoft SQL Server Management Studio** to perform the actual database recovery.</note>
+<note important>When performing a recovery, it is important to **order the files properly** for a successful recovery.</note>
+==== MSSQL Management Studio ====
+**Restore a Database Backup Using SSMS**: https://docs.microsoft.com/en-us/sql/relational-databases/backup-restore/restore-a-database-backup-using-ssms?view=sql-server-ver15
+==== Transact-SQL ====
+|RESTORE DATABASE database_name FROM full_database_backup WITH NORECOVERY |complete database backup      |
+|RESTORE DATABASE database_name FROM differential_backup WITH NORECOVERY  |differential database backup  |
+|RESTORE DATABASE database_name FROM log_backup WITH NORECOVERY           |oldest log backup             |
+|RESTORE DATABASE database_name FROM log_backup WITH NORECOVERY           |next chronological log backup |
+|...                                                                      |in chronological order        |
+|RESTORE DATABASE database_name FROM log_backup WITH NORECOVERY           |last log backup               |
+|RESTORE DATABASE database_name WITH RECOVERY                             |recover the database          |
+===== Database Recovery Models =====
 ==== Script ====
-Set all databases to the Full recovery model:
+Set all databases to the FULL recovery model.  Replace the three occurrences of "full" with "simple" if desired.
 <file>
@@ Line 30: / Line 58: @@
 WHILE @@FETCH_STATUS = 0
 BEGIN
-IF (SELECT DATABASEPROPERTYEX(@dbname,'RECOVERY')) <> '<RECOVERYMODEL>' and @dbName <> 'tempdb' BEGIN
+IF (SELECT DATABASEPROPERTYEX(@dbname,'RECOVERY')) <> 'full' and @dbName <> 'tempdb' BEGIN
 -- create the alter database command for each database
-SET @cmd = 'ALTER DATABASE "' + @dbname + '" SET RECOVERY <RECOVERYMODEL>'
+SET @cmd = 'ALTER DATABASE "' + @dbname + '" SET RECOVERY full'
--- alter each dataabase setting the recovery model to <RECOVERYMODEL>
+-- alter each database setting the recovery model to full
 EXEC(@cmd)
 PRINT @dbname
-end
+END
 FETCH NEXT FROM db_recovery_cursor INTO @dbname

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